you'll be fine, just take your time....
we stepped one guys C22 yesterday, using the trailer winch only, just run across the bow to the forestay....went up fine, but took one on the winch and two on the boat (on a trailer), although a new roller furling was involved in the process and 20kts of wind wanted to push the whole mess sideways...
I used stingy's mainsheet method last time on our boat with two guys, 20 minutes...best we could do, things get tangled up, turnbuckles need adjustment, etc...
good to know re: the backstay tackle, I need to get rid of my split mess from earlier post....